CVE-2024-8660: Stored XSS in the "Top Navigator Bar" block
First published: Tue Sep 17 2024(Updated: )
Concrete CMS versions 9.0.0 through 9.3.3 are affected by a stored XSS vulnerability in the "Top Navigator Bar" block. Since the "Top Navigator Bar" output was not sufficiently sanitized, a rogue administrator could add a malicious payload that could be executed when targeted users visited the home page.The Concrete CMS Security Team gave this vulnerability a CVSS v4 score of 4.6 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N . This does not affect versions below 9.0.0 since they do not have the Top Navigator Bar Block. Thanks, Chu Quoc Khanh for reporting.
Credit: ff5b8ace-8b95-4078-9743-eac1ca5451de ff5b8ace-8b95-4078-9743-eac1ca5451de
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/concrete5/concrete5 | >=9.0.0<9.3.3 | 9.3.3 |
| Concrete5 | >=9.0.0<9.3.4 |
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Reference Links
- https://documentation.concretecms.org/9-x/developers/introduction/version-history/934-release-notes
- https://github.com/concretecms/concretecms/pull/12128
- https://nvd.nist.gov/vuln/detail/CVE-2024-8660
- https://github.com/concretecms/concretecms/commit/f5a01c88fb2630db96e58dcd7f52ea41e516d4e9
- https://github.com/advisories/GHSA-998c-q8hh-h8gv (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-8660?
CVE-2024-8660 is classified as a stored XSS vulnerability that could allow a malicious payload execution.
How do I fix CVE-2024-8660?
To fix CVE-2024-8660, upgrade Concrete CMS to version 9.3.4 or later.
Which versions are affected by CVE-2024-8660?
CVE-2024-8660 affects Concrete CMS versions from 9.0.0 to 9.3.3.
Can an attacker exploit CVE-2024-8660 remotely?
Yes, an attacker could exploit CVE-2024-8660 remotely if they gain administrator access.
What type of attack does CVE-2024-8660 involve?
CVE-2024-8660 involves a stored cross-site scripting (XSS) attack due to insufficient output sanitization.
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